| 固体超强酸于多孔高硅氧纤维的负载及其在酯化中的应用 |
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| 引用本文： | 林金溪,何静,丁马太,陈立富.固体超强酸于多孔高硅氧纤维的负载及其在酯化中的应用[J].功能材料,2012(2):227-230. |
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| 作者姓名： | 林金溪 何静 丁马太 陈立富 |
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| 作者单位： | 厦门大学化学化工学院;厦门大学材料学院特种先进材料实验室高性能陶瓷纤维教育部重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51072169) |
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| 摘 要： | 以溶胶浸渍法,将SO42-/ZrO2固体超强酸负载到由酸沥滤工艺制备的多孔高硅氧纤维上,并用于催化合成乙酸正丁酯。研究结果表明,该催化剂具有用量少,酯收率较高,产物易于分离等优点;而且使用寿命长,重复用于5次合成后,酯化率仍高于70%。
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| 关 键 词： | 多孔高硅氧纤维 固体超强酸 酯化 |
Preparation of porous silica fibers impregnated with superacid and its application in esterification |
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| LIN Jin-xi,HE Jing,DING Ma-tai,CHEN Li-fu.Preparation of porous silica fibers impregnated with superacid and its application in esterification[J].Journal of Functional Materials,2012(2):227-230. |
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| Authors: | LIN Jin-xi HE Jing DING Ma-tai CHEN Li-fu |
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| Affiliation: | 1.College of Chemistry & Chemical Engineering,Xiamen University,Xiamen 361005,China; 2.Advanced Materials Laboratory,College of Materials,Key Laboratory of High Performance Ceramic Fibers,Ministry of Education,Xiamen University,Xiamen 361005,China) |
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| Abstract: | E-glass fibers were acid-leached to prepare porous silica fibers.The fibers were impregnated with sol and heat-treated to produce SO2-4/ZrO2 solid superacid catalyst.This catalyst was used in the synthesis of n-butyl acetate.It had been found that the solid catalyst has high surface area and high activity.It is more effective than liquid superacid or nano-powder supported solid superacid.Consequently,the catalyst consumption can be reduced and the yield of esterification is improved.Moreover,this catalyst can be recovered easily by filtration.After 5 times of recovery,the catalyst can still give a good esterification yield of over 70%. |
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| Keywords: | porous silica fiber solid superacid esterification |
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